Activated carbon is a unique material, because of huge capacity for adsorption from gas and liquid
phases. Promising results are obtained using activated carbons as hydrogen sorbents in electrochem-
ical storage. Raman spectroscopy is widely used for characterization of carbonaceous materials (CM).
CM investigated in current work were obtained from parent, vegetable organisms (coconut shell and
tamarind seeds)
via
carbonization then subjected to activation. Obtained Raman spectra were analyzed
by generalized 2D correlation method based on the Noda’s approach
[19,20]
taking activation time
as an external stimulus. 2D correlation spectroscopy shows the presence of different CM phases, not
only differentiating between phases but also seems to distinguish forms within certain carbonaceous
phases. Versatility of CM phases arises from the different ratio of sp
2
(graphitelike) to sp
3
(diamondlike)
bonds